An orthosis is a medical device designed to support, align, or improve the function of a body part, typically a limb or the spine. It can help individuals with injuries, disabilities, or conditions like cerebral palsy or arthritis by providing stability and reducing pain. Orthoses can be custom-made or prefabricated, depending on the patient's needs. These devices come in various forms, including braces, splints, and shoe inserts. They are often used in rehabilitation settings and can be prescribed by healthcare professionals such as orthopedic surgeons or physical therapists. Proper use of an orthosis can enhance mobility and overall quality of life.